<Window x:Class="Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Use ComboBox" Height="300" Width="300">
<Grid>
<ComboBox Height="39" HorizontalAlignment="Left" Margin="10,10,0,0" Name="ComboBox1" VerticalAlignment="Top" Width="120" SelectedIndex="0" VerticalContentAlignment="Center">
<ComboBoxItem>Apple</ComboBoxItem>
<ComboBoxItem FontFamily="Comic Sans MS" FontSize="18" Foreground="Blue">Banana</ComboBoxItem>
<ComboBoxItem>Cherry</ComboBoxItem>
</ComboBox>
</Grid>
</Window>